Level 4

철저히

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Meaning and Usage

"철저히" means "thoroughly" or "completely" and is used to emphasize that an action is done with great care and without omission. It often appears in formal or serious contexts such as investigations, preparations, or rule enforcement.

Common Collocations

  • 철저히 준비하다: to prepare thoroughly
  • 철저히 조사하다: to investigate thoroughly
  • 철저히 지키다: to strictly observe or follow

These collocations highlight the sense of completeness and strictness.

Register and Nuance

"철저히" is neutral to formal in tone and is appropriate in both spoken and written Korean, especially in professional or academic settings. It conveys a strong sense of diligence and precision.

Learner Tips

A common mistake is confusing "철저히" with similar adverbs like "완전히" (completely) or "꼼꼼히" (meticulously). While "완전히" focuses on completeness, and "꼼꼼히" on carefulness, "철저히" emphasizes thoroughness without leaving anything out. Use "철저히" when you want to stress that every detail or step has been fully covered.

Example Sentences

그는 철저히 준비해서 발표를 성공적으로 마쳤다.

Geuneun cheoljeohi junbihaseo balpyo-reul seonggongjeogeuro machyeotda.

He prepared thoroughly and successfully finished the presentation.

철저히 조사한 결과, 문제가 발견되었다.

Cheoljeohi josahan gyeolgwa, munje-ga balgyeondoeeotda.

As a result of a thorough investigation, a problem was found.

철저히 지켜야 할 규칙이 많다.

Cheoljeohi jikyeoya hal gyuchik-i manhda.

There are many rules that must be strictly followed.